Machine for molding.



No. 706,487. Patented Aug. 5; i902?.

J. N. BATTENFELD. mA'cHmE Fon nomme.

(Application lad Aug. 24, 1901..) (no lndl.)

3 `Sheets-SMM' I.

0.706,4'87.l Patented Aug. 5, |902.v

J. N. BATTENFELD.

yMACHINE FOR HOLDING. (Application filed Aug. 14l 1901.)

UNITED STATES PATENT OFFICE.

JOHN N. BATTENFELD, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVE- LANDAUTOMATIC MOULDING MACHINE COMPANY, `A CORPORATION OF OHIO.

MACHINE FOR MOLDING.

SPECIFICATION forming part of Letters Patent No. 706,487, dated August5,1902.

Application iiledAugnst 24, 1901. Serial No. 73,143. (No model.)

T0 all wwntit'mcty concern:

Beit known that I, JOHN N. BATTENEELD, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and My inventionrelates to machines for mold` ing in sand as applied with the usualflask and patterns; and the obj ect of the invention. is to providemeans whereby the flaskv is filled-- with sand and the same then tampedor,

rammed about the pattern, after which the pattern is withdrawn, all ofthese operations being performed mechanically'while the machine is inmotion and as hereinaftershown and described, and more particularlypointed out in the claims.l

In the accompanying drawings, Figure l isa side elevation of myimprovedmachine with the parts at rest asat the end' of each operation. Fig. 2is a sectional plan view, taken on line X X, Fig. l, of the rear side ofthe frame and showing more particularly the mechanism for startingandstopping the machine. Fig. 3 is acentral sectional elevation on lineB B, Fig. 5, with the sand-feed box brought forward over the flask. Fig.44 is a perspective View of the feed-box alone. Fig. 5 is a frontsectional view on line A A, Fig. 3. Fig. 6 is a perspective view of aflask adapted to be used with this machine.

Briefly stated, the operation of molding,

with this machine is divided into three separate but associated steps,which are defined as follows: first, the placing of the pattern intoposition and the withdrawal of the same after the molding has beenaccomplished; second, the filling of the liask with sand about thepattern, and,third, the tamping or ramming of the sand to make a perfectmold. All of these operations are performed mechanically after a flask Ais placed in position, and the main advantage .gained thereby is therapidity in which perfect work is turned out and labor and expensesaved. The mechan- 'ism entering into these various operations ismounted directly or indirectly upon a main frame 2, and the partsdirectly associated 1with the molding-flask A comprise a movable supportB for the pattern C, a sliding sandfeed box D, and a tamping or rammingplunger E.

Flask A is ofany usual or desired form and is removably supported upon amoldboard 3, `bolted or otherwise fastened between the sides of frame 2.Pattern C is adapted to be raised and lowered through openings ofcorresponding shape to the pattern in moldboard 3, and the means foroperating support B comprise a grooved cam 4, within which a roller a onthe lower end of vertical stem 5 rides in con- `stant engagement. 4Across-bar 6 guides and supports the lower end of stem 5 in its verticaltravel. Cam 4 is fastened on a crossshaft 7, which `has .bearings'onmain frame 2, and said shaft is rotated by means of gears 8 at eachendthereon outside of frame 2, which mesh with pinions 9 on a power-shaft10, mounted in bearings at the rear of frame 2. VA frictionbandfwheel 11on shaft lO transmits the power thereto when handle 12 throws in thefriction-clutch-actuating mechanism. This friction-clutch mechanism maybe of any suitable kind. As shown, a curved clutcharm d, pivoted onwheel 11, is held at its free end in constant engagement with thebeveled portione on collar f. Rollers or pins g on the forked end oflever l2 ride in a circumferential groove in said collar and provide theconnec-v tion whereby said collar is forced to slide on shaft 10inrelation to arm d when said lever 12 is actuated. Lever l2 ispivotally supported upon a standard 13, attached to frame 2 and is bentat an angle at 14. This angle 14 is engaged bya roller 15, mounted onthe lower `head 16 of the connecting-rods 17, which operateplungerE.Lever12isoperatedbyhandto throw on the power and is engaged by roller 15to throw off the power at the end of every single revolution of gear 8.

At the top and rear of l., the machine is located a sand-supply box ormagazine 18, below which feed-box D is adapted to slide and matelydischarged into the flask A.. Feed- IOC) box D has side flanges 19,which slide in grooved ways b at the top of frame 2, and said boxnormally rests above a table 20 on frame 2, which is located beneath thesupplybox 18. Box D is carried forward, with its load of sand, directlyover flask A when plunger E is at the upper part of its movement and outof the Way, and this is doneby means of links 21, pivotally connected totrunnions or projections c, rigid with each side of box D, and levers22, connected withsaid links, which levers are pivoted on the main frameat 23 and have rollers 24 below this pivot riding in cam-grooves 25 uponthe inner face of each gear 8. l

Connecting-rod heads 16 are attached to eccen trically-arran gedwrist-pins 26 on the outer face of'gears 8, and the connecting-rods 17are rigidly attached to heads 16, but are free to slide at their topends within heads 27, pivoted on the extensions or trunnions ofcrossbeam 28, which carries ramming-plunger E. Springs 29 are interposedbetween heads 27 and nuts 30, threaded on the top end of each rod 17.Cross-beam 28 is free to slide upon upright rods 31, rigidly attached toframe 2.

Feed-box D has a back extension or table 32, which closes thebottom ofsand-supply box 18 when box D is carried forward. As box Dis returnedplunger' E is being carried down, and the sand that has been depositedin ask A is then rammed in the fiask, and it is in this connection thatsprings 29 are of all importance. If the sand were always of the samecharacter, the exact pressure to make a perfect mold could be determinedand plunger E could be set at any desired point; but the sand packsdifferently under different conditions, depending upon whether it be dryor green sand, and therefore a tamping-plunger having a yieldingpressure,which will permit the plunger to adapt itself to varyingconditons, is necessary. After plunger E is carried up thev patternv Ois Withdrawn vby cam 4 lowering support B, and the iiask, with thefinished mold,is then removed and anew flask is placed inposition andthe process is repeated.

Feed-box D is preferably made to hold considerably more sand than theiiask requires, because a better and more even filling ofthe flask isthereby obtained. The construction of the machine in its various detailscould be materially changed without departing from the spirit of myinvention, and therefore I reserve the right to make such modificationsas would come withinthe scope of my claims.

What I claim is- 1. In a molding-machine, a iiask and pattern, and meansto support the same, in combination with a movable sand-feed box havinga greater sand capacity than said flask when the pattern is in placetherein and when the sand is compressed,means to support said feed-boxabove and in close relation to said ask, and means to operate saidfeed-box back and forth over said fiask, substantially as described.

2. In a molding-machine, the flask and a support therefor, aramming-plunger, a support for the pattern beneath said plunger, asliding feed-box having a greater sand capacity than said flask when thesand is compressed, and means to carry said box over the pattern-supportwhereby part of its contents is discharged into said flask, and means toretire said feed-box to level the sand within the flask, substantiallyas described.

3. In a molding-machine, the tiask and its support, a ramming-plungerarranged to operate above said support, means to raise and lower saidplunger, a sand-feed box adapted to slide back and forth over saidflask, said box comprising vertical walls with anopen top and bottom,and constructed to carry more sand` than said liiask will hold when thepattern is in place therein and when the sand is compressed, asand-supply box for said feed-box, and means to move said feed-box backand forth between said iiask and supply-box, substantially as described.

4. In a molding-machine, the combination of a flask, a pattern-supportbeneath said flask, a ramming-plunger adapted to raise and lower inrelation to said flask, vertical guides for said plunger, a power-gear,connecting-rods having crank connection with said gear and a slidingconnection with said plunger, and springs mounted on saidconnecting-rods to provide a yielding pressure for the plungersubstantially as described.

5. A molding-machine provided with a flask and a support for said flask;a ramming-plunger having a cross-beam adapted to slide, rigid verticalguides for said beam, trunnions at either side of said beam,connecting-rod heads supported on said trunnions, powergear,connecting-rods having crank connection with said gears and a slidingconnection with said heads, adjustable nuts on the ends of said rods,and springs between said nuts and head to provide a yielding pressurefor said plunger, substantially as described.

6. In a molding-machine, the movable ramming-plunger and a flasksupported below the same, a pattern-support beneath said flask, afeed-box at one side constructed to hold more sand than said ask whenthe sand is compressed, and adapted to slide over the top face of theflask, a sand-supply box for said feedbox, means to slide said feed-boxforward to convey part of the sand in said feed-box to said flask, meansto slide said feed-box back to level the sand deposited in the iask, andmeans to operate said plunger to compress the sand fed into said flask,substantially as described.

7. A molding-machine comprising a sandsupply box, a iiask, a feed-boxhaving a larger sand capacity than said flask when the sand iscompressed, and means to move said feedbox back and forth to fill thefiask uniformly with sand and to level the sand therein, in

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combination with a ramming-plnnger having means to operate the same tocompress the sand fed to said flask, substantially as described.

8. A molding-machine having a movable pattern-support and aramming-plunger in line with said support, and means to operate bothsaid support and plunger, comprising a shaft centrally located beneathboth said plunger and support, power-gears at each side of the verticalcenter of said plunger. and movable support, connecting-rods for theplunger` having crank connections with said gears, a cam on said shafthaving operative connection With-said movable support, and means torotate said shaft, substantially as described.

9. A molding-machine having a flask and a support therefor with aramming-plunger arranged to operate above the same, a movablepattern-support arranged beneath said plunger, a cross-shaft beneathsaid pattern-support, a cam on said shaft to carry said support up anddown and to hold the same in raised position during the filling of theflask and compression of the sand therein, powergears on said shaft,connecting-rods for said shaft having crank connections with said gears,and means to rotate said shaft, substantially as described.

10. In a molding-machine having a frame constructed to support a ask andprovided' sion at its top and rear adapted to close the bottom of saidsupply-box when the said feedbox is shifted, means to shift saidfeed-box from said sand-box to the flask and back to partially dischargeits load of sand into said flask, and means to level the sand in saidflask by the back movement of said feed-box, substantially as described.

l1. In molding-machines using flasks and patterns, a sand-supply box, amovable sandfeed box beneath said supply-box, arammingplunger, a movablesupport for the pattern, a cross-shaft beneath said pattern-support, apair of power-gears on said shaft, connectingrods having crankconnections With said gears to operate said plunger, cam-grooves in theface of said gears, a pi'voted lever mounted opposite each gear andhaving a roller riding in said grooves, links connecting said lever withthe movable feed-box, means to rotate said gears and shaft, and means toautomatically stop said mechanism at the end of the moldingoperation,substantially as described.

12. In a molding-machine using flasks and patterns, a movable sand-feedbox for filling the flask, a rainming-plunger, a movable snpport for thepattern, a cross shaft having power-gears with connected mechanism tooperate each ot' said parts, a friction-clutch, a lever to throw saidclutch, and means eccentrically mounted on one gear to engage said leverand stop the operation after each full revolution of said shaft,substantially as described.

Witness my hand to the foregoing specification this 9th day of August,1901.

JOHN N. BATTENFELD.

Witnesses:

R. B. MOSER, I-I. E. MUDRA.

